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Method for dechlorinating of organic phase

An organic phase and dechlorination technology, applied in the direction of improving the process efficiency, can solve the problems such as the inability to meet the production process, and achieve the effects of expanding the source of raw materials, shortening the phase separation time, and improving the working environment.

Inactive Publication Date: 2017-12-29
云南龙蕴科技环保股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In today's increasingly scarce resources, the production process cannot be satisfied only by controlling the high chlorine content of zinc raw materials, and it is required to solve the problems in various ways and measures to ensure the smooth progress of production.

Method used

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  • Method for dechlorinating of organic phase
  • Method for dechlorinating of organic phase

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Experimental program
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Embodiment Construction

[0017] The following experimental basic data embodies specific embodiments of the present invention.

[0018] Dechlorination of Zinc-supported Organic Phase by Alkaline Washing Solution

[0019] In this test, four-stage countercurrent washing is used to wash the zinc-loaded organic phase. The zinc-loaded organic phase contains 600 mg / L of chlorine; the industrial water contains 5.5 g / L of chlorine, and the pH is 4.5; the mixing time is 3 minutes; the phase separation time is 3 minutes. Sampling and analysis of the chloride ion content in the outlet water phase and the outlet organic phase, the data analysis is as follows:

[0020]

[0021] It can be seen from the above data that when water / organic phase=1 / 100, the content of chloride ions in the organic phase is only 7mg / L, and the chlorine removal rate can reach more than 98%. The consumption of industrial water is greatly reduced, and the generation cost is saved.

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Abstract

The invention discloses a method for dechlorinating of an organic phase. The zinc-loaded organic phase is subjected to four-stage countercurrent washing; in the second-stage washing process of four-stage countercurrent washing, aqueous alkali is added in a second-stage washing water phase circulating pool, so that the pH value of a regulating circulating solution in the second-stage washing water phase circulating pool is within 6.5-7.0; and after the regulating circulating solution and the zinc-loaded organic phase in second-stage washing are mixed, the pH value of a water phase is 5.0, and the pH value of first-stage washing water at an outlet is 3.5. The dechlorination rate is high, and the chlorine content level can be extremely low; closed loop circulation can be achieved, development of circular economy is achieved, the chlorine content in zinc strip liquor is decreased by a large margin, the working environment is improved obviously, the quality of a zinc sheet is improved, and the electrolysis cost is reduced; and the chlorine requirement of raw materials can be appropriately reduced, and the raw material sources can be expanded.

Description

technical field [0001] The invention belongs to the field of nonferrous metal hydrometallurgy. It specifically relates to a method for dechlorination in an organic phase. Background technique [0002] Chloride ions in the liquid after stripping affect the normal progress of the zinc electrowinning process, which not only intensifies the corrosion of the cathode and anode plates, but also increases the lead content in the cathode zinc; the chlorine in the electrode tank increases, which deteriorates the operating conditions and seriously affects the health of workers. In good health. Therefore, general zinc smelting enterprises strictly control the zinc raw material chlorine to be no more than 0.02%. In today's increasingly scarce resources, the production process cannot be satisfied only by controlling the high chlorine content of zinc raw materials, and it is required to solve the problems in various ways and measures to ensure the smooth progress of production. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/44C22B19/20
CPCC22B3/44C22B19/26Y02P10/20
Inventor 杨桂芬杨龙
Owner 云南龙蕴科技环保股份有限公司